Equal gaps between text items. Tabs

I've put in a feature request to simply rename 'flush space' to something more intuitive and representative — flex space, flexible space, expanding space, etc. Vote here.

I understand why it was named 'flush space' when justification did not offer the full last line expansion, but that option seems to supersede (almost) any need for special spaces. Giving it a more descriptive name would have led both the OP and me to it, and I'm sure many users will be happy to discover it as well. But 'flush space' is too opaque and niche-use.

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If you want equal space between the items then I would just type the space I need. There are many options here, You could type a new n-spaces or m-spaces. You could type one m-space and give it a character style to make it the size you want, then apply a GREP Style or Nested Style to automatically format the m-space to use a character style. You could draw a rectangluar frame or a line of a fixed size then paste it as an anchored object. Use an Object Style to size the frame or line and give it no fill and no stroke.

1. Use Paragraph Alignment Justify (both sides justified)
2. Instead of inserting a tabulator or space between Words or Word Groups insert a Flush Space
   (Type > Insert White Space > Flush Space)
3. 

We are always happy to help!

~Barb

I would just use tabs, but it's Friday after a long week and I was challenged by the idea of an "easy button". 😉

~Barb

An easy button? How about changing the word spaces to non-breaking fixed spaces—leaving the gaps alone—and enabling full justify? Could save it as a paragraph style. Easier than messing with table. 

~Barb

I'd use the borderless table David suggested. A little bit of a hassle to manage at a content level, but endless adjustment and once done, a Table Style and maybe a Cell Style will allow it to be replicated easily.

There are only three ways to organize text horizontally: tabs, tables and the somewhat complex use of columns. (And text boxes, but that's a last-ditch hack, in most cases.) If tabs aren't serving your need — and since ID doesn't have the "springy tabs" that some apps do — a table is probably your best approach.

I am not sure how much this will ease "equal gaps" without manual adjustment, though. No really good solution for that, sans said "spring tabs," comes to mind.

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Have you tried the Span Columns setting in Paragraph styles? Specifically, the Split Columns setting. Another option would be a table without borders.