Selecting several tabs

[Elementari]

v4

Hello,

I'd like to mention that I find it difficult to get the following job done:
I'd like to select e.g. 30 tabs (located in various positions in the list of tabs) out of 150, and move them all to the bottom.
I'd like to use the keyboard to select them.
I'm using MacOS.

select up (ALT up) etc (many more below) is/are grayed out in settings.

In Directory Opus (Windows), I can simply highlight (not select just focus) a file by using up / down arrow which puts a dotted like around the file's line. hitting space bar will select it. and pressing CTRL will allow me to select e.g. the first, fifth and tenths of a list of files, all with the keyboard and up/down arrows, space, and CTRL.

Instead, up/down arrow moves up / down the list of tabs which makes little sense because in order to get this to work in the first place, the user will in almost all cases first move the mouse to the sidebar --- and at that point one will use two fingers to move the list of tabs up and down, not the keyboard! Instead I would expect up/down to change a pre-selection focus (dotted line around tab), just like in DOpus.