Icon Settings How Adjust Change Etc

Note sure how to accurately word my question - - - it is more general in nature than task specific., so here goes - - - How do you adjust the Microstation Drafting - drawings Icons? For example, in the "Placement" panel, under "Arc-Tools", when I pick "Place-Arc" it comes up (Defaults to) "Start, Center", but I want it to alway come up a "Start-Mid_End". Likewise, in the "Modify" panel, when I select "Construct Chamfer", I want it to allways come up with the "Radius" set at "1" and "Truncate" set at "Both". Likewise, in the "Modify" panel, the "Insert / Delted Vertex / Extend Line", I would like "Extend Line" on the "top" as the default. I have more, but that is what I would like to know in general. Thanks for your help.