Depends on your margin and risk setting. At the default setting, sometimes no trade is opened for several days, on other days 3 or 4 trades are opened simultaneously. If you use a low margin, it trades less frequently - you can then see "Skipped" messages in the message window. Zorro wanted to place a trade, but was prevented due to a too low margin or risk.

If you trade only one strategy, better use Z2fx, not Z1fx. Z2 opens trades more frequently, closes them earlier, and has less scary drawdowns.