If I wanted to create a single strategy with 2 "sets" of legs - e.g. a buy leg with call and put and a sell leg with call and put and apply different Entry/Exit time or square off settings to each of these sets then there is no way to do it.
The only way this is possible is to build a portfolio where the above feature would work as 2 separate strategies in tandem.
Please consider providing these "sets" in the strategy builder for building a single strategy.