Should I indicate in the resume in the list of work another area (but also from IT)?

Question

Career in IT

I'm sis now. admin and plan to be. Career was like this:
2010 ↓
- enikey
- webmaster (?)
- SEO (?)
- cooler enikey - remote banking
specialist ← difficult to attribute somewhere specifically, but very similar to a system. admin + knowledge in RBS (it's a pity that it seems to me that HR will scare away)
2015 ↑
I just read that they say it's better to create a separate resume ... or leave it?

Answer 1

In this case, it's worth it. Well, you didn’t work as a cleaner, but in a completely related profession. They will ask a question - I was looking for myself, I tried a profession.
By the way, you can get a lot of knowledge useful for admins from webmasters and SEOs ;)
Yes, and many admins get a part of this work dumped.