Set Bar 1 to any timecode position

Based on the advice of peakae and svennilenni, you could try something like:
1 - Open Project Setup. Set bar offset to 20. Answer ‘Yes’ to ‘keep the project content at its bar positions?’
2 - Place the cursor at Bar 1
3 - Select ‘set timecode at cursor’. Enter 01.01.35.00.

This takes into account the video start, so you can now place your video event at 01.01.13.24 (if I understood correctly). To do this select the video event and type in the start address in the start field on the info line.

If you need more space before bar 1, just use a greater bar offset in step 1 above.

I suspect there may be a still easier way.

P.S. When doing all this, open the transport panel to see where you’re at with the TC and bar positions or add a ruler track.