Using trend catcher with hour expiration?

Are you limited to only 5 and 20 minute binaries?

No, trend catcher is not limited to only 5 and 20 minute binaries. It can be used on any time frame. You can certainly try it out on hourly expirations.

For 20 minute binaries use the same exact rules and indictors as the 5 minute binaries but use a 6 tick chart instead of a 3 tick chart and you will need to adjust your Expected Range time frame to 20 mins not 5 mins