I should have asked if you are in runtime/simulate or in editor. If you are in PIE/Simulate you can set you can do it with a trigger event. There is actually a function already in a VCam plugin that will pause the current level sequence and will save you some steps. So go ahead and load that plugin first. Then you can set a key on the trigger event and set you event BP like this.
If you want to do it in editor its a little more complicated. You’ll need to run something on tick to see what frame the current level sequence is on and then tell it was frame on or what number of frames to pause it after.
The easiest way to do this is to make an Editor Utiltiy Actor or BP Actor and drag it into your level. Then you can use Editor Tick or LiveLinkUpdate to tick the editor to get the current frame. You’ll have to split the Return Value, then Return Value, and Return Value Frame Frame Number to get to the integer of the current frame. Then you can just make some logic that will compare the frame the current level sequence is on vs when you want it paused.