Make custom tab visible across all workbook

Wonder if people have XML accompany with vba to have custom tab visible across all workbooks? If I create an xlam, this the tab is visible across all workbooks, however, I only wanted xlsm. I try to create one, however, if I switched workbooks, my tab disappears and if I switched back, it comes back. I would like the tab to be visible all the time, thanks.

I don't believe you can. If you have a custom tab in an xlsm, it is only visible when that workbook is active. I think that this is a fundamental principle of contextual tabs.

Thanks for your insight, xld. That would explained no matter what I tried, the tab keeps on disappearing on me.....

You can use namespace to have customUI shared across workbooks.

See Namespace example about 2/3rds of the way done the page.
http://www.andypope.info/vba/ribboneditor.htm

But that still isn't all workbooks Andy, it is only for those selected workbooks.

If I open the namespacea.xlsm a new tab My Utils tab is displayed. If I then use CTRL+N to create a new workbook the tab is still displayed. Same if I open and existing file it still available.

Thanks Andy. I will denfinitely take a look at NameSpace.