Cannot split or join multiple videos when my video is in the timeline these features are greyed out

Problem:
Once I’ve recorded a video simulation and I have my video in the timeline, the Splitting and Joining Multiple Videos is greyed out and cannot be selected.

Thanks for your help

ActivePresenter Version: 7

OS: Windows

Notes:

Hi,

Those buttons are Cut and Copy range. They are enabled when a range is selected.
Split and Join video buttons are in the adjacent group.

Regards,

great thank you for your prompt response much appreciated.