time filter creation

Sol 1:

You can use role-playing dimensions
Have 2 similar calendar tables - 1st connected to offer date and 2nd connected to option date
Then you can use two different date hierarchies on 2 different tables to filter your analysis.

Refer more on  https://learn.microsoft.com/en-us/power-bi/guidance/star-schema

Sol 2:

If its a fairly small report then you can think of merging the two tables and creating a single table architecture.
This could be an optimum way if you evaluate using dax studio on how much cpu consumption your queries take.

Here's a video which helped me evaluate the architecture - https://www.youtube.com/watch?v=qEWrYO1ioe0

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Appreciate your Kudos!! Happy to Help! Katerina_SL