how to show dotted rest

[John Ruggero]

It's not just you. It is pretty standard practice to avoid dotted quarter rests in 4/4. But for some reason there is still a distaste among some publishers for dotted quarter rests in 6/8 etc. But this seems to be changing. Elaine Gould recommends them. She also says: "The longest permitted dotted rest (in simple time, that is, duple meters) is one value smaller than the beat." So as far as she is concerned dotted eighths are fine in 4/4, but not dotted quarters. However, she feels that dotted quarters are OK in 2/2 for example.

[OCTO]

Maybe it's just me—but I'd use a dotted 1/4 rest only in signatures whose beats were grouped in threes, such as 6/8 and 12/8. In that case, it's obvious that a dotted quarter represents one beamed group of eighth notes. Make sense?

Of course, because represents one beat in the compound time of x/8.

[NeeraWM]

Total sense, Ander, yes!
Dotted rests in simple meter are acceptable only when shorter than a beat, and only when in the first half of the beat (very shortened and succinct summary of what exposed so far!)