I am using a statistical software called Jamovi and it requires me to combine a few of the groups that have fewer than 30 patients so that it applies to the central limit theorem but I am struggling to do it.

This is my research question: Are there differences in the number of days from symptom onset to admission between final diagnosis? (Note: Combine final diagnosis groups with fewer than 30 patients so that you can use the Central Limit Theorem)

The values for my data set for final diagnosis are 1 = 7, 2= 16, 3=12, 4=1602 5=2620 so the first 3 values would be combined so that I can still use central limit theorem but I am not sure how to combine that values on Jamovi.