OMV control panel / webgui -- additional user(s)?

According to this thread: Solutions to common problems (see quote below, Problem #3 in the FAQ), it suggests that only the "admin" user has access to everything.

TL;DR -- is it possible to add SOME/most webgui options, so they are accessible to other users from the console, as well?

I was unable to find an answer to this after pouring through the documentation and other potentially relevant posts/threads. Thanks you kindly for anyone who might be able to school me on this. It's been a number of years since I've had an OMV build, happy to be back.

Debian GNU/Linux 9.11 (stretch)
Linux OMV 4.19.0-0.bpo.6-amd64 #1 SMP Debian 4.19.67-2+deb10u1~bpo9+1 (2019-09-30) x86_64 GNU/Linux

This build is on an ancient Dell Optiplex 330:

• Intel Pentium Dual-Core CPU E2160 @ 1.80GHz
• 4GB DDR3
• 500GB x 4 (SATA1 port is not responding, have some troubleshooting to do -- drive is good), 500GB RAID1 array for network backups, 500GB for torrent downloads, until I can resolve the issue with any drive I try in SATA1 device reported as "unknown" =(
• OMV v4.1.26 (Arrakis) boots (and runs) from an 8GB USB 2.0 flash drive, with folder2ram plugin & noatime and nodiratime options added to /etc/fstab

Zitat von https://forum.openmediavault.org/index.php/User/4556-ryecoaaron/

Problem #3: I only see a few items in the web interface like the user section of Access Rights Management.
Solution #3: You did not login as the admin user. This is the only user that can access everything.

EDIT: Getting decent performance across the network, using CrystalDiskMark. Intending to run 4 x 500GB in RAID10 array, if possible.

Performance testing, mounted as Windows network share:
(read / write speeds)

• Sequential Q32T1 118.5/116.8 Mbps
• Sequential4K Q8T8 105.8/67.87 Mbps
• Random4K Q32T1 92.03/77.62 Mbps
• Random4K Q1T1 11.37/12.40 Mbps

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`d$$'     ,$P"'   .    $$$    Uptime: 21 hours, 52 minutes
 $$P      d$'     ,    $$P    Packages: 556
 $$:      $$.   -    ,d$$'    Shell: bash 4.4.12
 $$;      Y$b._   _,d$P'      CPU: Intel Pentium Dual E2160 (2) @ 1.8GHz
 Y$$.    `.`"Y$$$$P"'         GPU: Intel Integrated Graphics
 `$$b      "-.__              Memory: 469MB / 3871MB
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Thank you kindly for the prompt and concise response to my inquiry, sir. Have yourself a wonderful evening.