Problem:

How to insert a lot of concentrated forces at different locations all at one time?

Solution:

Use one or more of the Select commands to select the node points where the concentrated forces are to be applied. After the important node points have been selected, use the Insert> Xtra Data> Concentrated force command, enter in a universal value, and press OK button to apply the universal setting to all the node points in the selection set.

Note: read AutoPIPE help to fully understand the dialog settings. 

Another option would be to open the respective input grid tabs to quickly, select, and  modify the data as needed.

Fast and simple approach.

See Also

Model Concentrated Forces / Added Weight

Bentley AutoPIPE