The Windows 10 Mobile app has a very easy way of finding an item in a list: the list is divided into sections by the letters of the alphabet, and by ticking on any of these letters, the whole alphabet appears and one can easily select the letter one wants and jump right to it. The Windows 10 Persons app has a similar search function. Unfortunately, although the Enpass Store app for Windows 10 does divide the list into sections by means of digits and letters, ticking or clicking on them in doesn't do anything.

Thanks for your suggestion @cliovincent  I have noted it down and forwarded to the concerned desk for further consideration.

Cheers!