The Custom Properties feature is available in the Mindjet MindManager Pro edition only.
One way to include data in a map is by adding Custom Properties sets to your topics. A Custom Properties set is an object included within a topic that contains a list of property names and their values. You can create and re-use Custom Properties sets to standardize the entry of data for topics of a specific type. For example you could create a Custom Properties set with fields for standard employee data such as department, manager, title, employee number, etc.
Within the set, you can classify some or all of the properties as Basic Properties. You can choose to view only Basic properties or all the properties.
Creating a Custom Properties set involves two steps:
First, define a list of properties
of various data types.
At this point, you have a list of properties without values and the
Custom Properties are ready for data entry. If you'd like to use this
list of properties for other topics you can duplicate it by copying the
topic or by creating a map part.
Second, you edit the Custom Properties to populate the fields with data specific to this topic.
Once the Custom Properties set has been created you can choose to show or hide it, and if its no longer needed, you can remove it from the topic.
To add a Custom Properties set:
Select a topic.
Click Topic - Custom Properties. The Define Custom Properties dialog appears.
Now you are ready to define the list of properties:
Click New. The placeholder "New Property" appears in the properties list
Enter a Name for the Property.
Choose its data Type
and options. The data type and
options you choose will determine how the Property's data is displayed
and what type of data entry field is used. 
The Basic Property checkbox
determines whether this data is shown in the Custom Properties Basic Properties
view. If unchecked the Property is only shown when you view All Properties.
Repeat steps 3 through 5 to add more properties.
When you have finished adding properties, click OK to exit the dialog.
Note: If you want to re-use this set of Properties for other topics, you can duplicate this topic before entering the data. You can either copy the topic or, if you plan to use it frequently, create a map part from it.
Start the edit mode by selecting the topic and
doing one of the following:
Right-click on the Custom Properties topic icon
and choose
Edit Properties
or
press F2.
Shortcut: Double-click on the Custom Properties set to start the edit mode.
Enter the data for the Properties. The data entry is controlled by the data format and options. To see more properties, you can enlarge the Custom Properties window by dragging the right and bottom margins.
When you are finished entering the data press OK.
To Show or Hide the Custom Properties:
Click the show
or hide
button on the topic
To see only Basic Properties:
Right-click the Custom Properties
icon
and select Show
Basic Properties.
To modify the list of Custom Properties:
Right-click on the Custom Properties topic icon
and choose Define Properties.
To remove the Custom Properties from the topic:
Right-click the Custom Properties
icon
and select Remove
Custom Properties from Topic.