Select the desired fields.

With a right-click on this area, the fields can be sorted by "selection".

As a result, sections can be filtered.

For example, "Date of oocyte retrieval" can be set to "NonBlanks".

You can define your own conditions.

If you want the time range to be limited, or look for a suitable date of your choice, E.g.: "Date of first thawing", double-clicking on this date opens the window for the condition you want to set. With '+' button, a new condition is applied.

Several conditions can be applied, for example, "Is greater than" and "less equal".

This condtion filters "Date of first thawing" .You get now all the cycles in which a thawing was made in this period. Inseminations or Aspirations then naturally fall out. If you just want cycles with thawing, this is the correct filter. 

 You could, for example, Filter on "reference date". Then again, all therapies are considered, but you were just expecting the result of your choice (for example, all pregnancies), so, inevitably another filter should be set.

But you could also choose "Date of ET or latest IUI" to use as a filter, then only therapies in which there has been an insemination or a transfer can be used. It's not the case for not implemented, canceled cycles, or cycles where everything was frozen, thus there was no transfer, and that makes them automatically fall out of the result.