In the future, you may want to try using a Person ID fact to facilitate filtering of individuals in your tree.
I use a generational Person ID fact based upon my pedigree chart. For my ancestors, each person is given a two part ID number. The first part is the generation of the individual with respect to me (the root person), and the second part is their position in the generation. All other relatives and inlaws are tied to these ancestor numbers. Filtering for a specific generation or several generations is relatively easy. The attachment shows the Person ID numbers for 4 generations of a pedigree tree.
I use a generational Person ID fact based upon my pedigree chart. For my ancestors, each person is given a two part ID number. The first part is the generation of the individual with respect to me (the root person), and the second part is their position in the generation. All other relatives and inlaws are tied to these ancestor numbers. Filtering for a specific generation or several generations is relatively easy. The attachment shows the Person ID numbers for 4 generations of a pedigree tree.