To manage sidehead dimension parameters:
Set up MDM dictionarythat is used as data entry form parameter.
Add an attributethat will be manage sidehead dimension parameter:

Fill the dictionary with values:

For various elements there are different values of the Forecasting Period Start attribute.
Set up dictionary that is used as a sidehead dimension.
Add a parameter of dictionary. In the example theActuality date parameter is added:

Fill the dictionary with values:

For the PS ABK ARNU element different dictionary attributes values are specified for different dates: Name, OST, RNU and others.
Add a parameter to a data entry form. Set dictionary configured in the step 1:

Add a table area to a data entry form.
Add the dictionary configured at Step 2 as a sidehead dimension:

Select the Manage Parameters item in the dimension's context menu. In the dialog box that opens specify:
Parameter - Actuality date.
Value type - Parameter attribute.
Value - the Forecasting Period Start attribute of the Planning Version parameter:

Output the rest of the sidehead dimension attributes to the heading:

Finish table area setting.
As a result, name, OST, RNU and other sidehead element attributes will be changed in the data entry form.
See also: