insert a transfer track into an already closed track loop

Hello,
i have made my first coaster with station, lift hill, a normal track and a brake at the end. Then i have closed the loop, i.e. i have connected the start vertex with the end vertex. I have seen totorials to make a transfer track to storage more trains, but this has start and end vertex not connected.

But i cannot find a hint how to separate tracks, is it possible to delete a track between two vertices? I can select two vertices, but there is no option to remove the track between it. Is it possible to insert a transfer track for storage trains into an already finished coaster with start and end vertex connected?

Thanks for help. Perhaps it is very easy if one knows how to do...

Click a vertex, click Split Up in the Track tab.

Thank you, it works, very easy ;-) I had to readjust the type separators of the brake and station, also the first rail connector after the station, thes points had shifted. But now it works.