בס"ד
0.25x
0.5x
0.75x
1x
1.25x
1.5x
1.75x
2x
Tallis for Kabolas Shabbos and for Mincha erev Shabbos is not done.
However, to avoid conflict you can compromise on Mincha but not Kabolas Shabbos as that may be a situation of danger.