How much rest must a bowler have between spells in a match?

Before a bowler returns for another spell, the same number of overs must have been bowled from the same end as their completed spell.

For example, a 14-year-old who bowled a 5-over spell should wait until 5 more overs have been bowled from that end (10 overs in the match in total). Cricket Australia notes this is likely to take about 30 minutes.

At training, allow at least 20 minutes between spells.