The PCB said on Wednesday that the National Command and Operation Centre (NCOC) has approved 25 per cent crowd attendance for the league.
The attack happened outside the Science College in Quetta, the capital of Baluchistan province.
In another major trade, player of the National T20 Iftikhar Ahmed has joined Quetta after being part of Islamabad United for the 2021 season.
The meeting may discuss the issue of recognising the new Taliban government.
The administration in Chaman said no arrangements were made so far to welcome Afghan refugees to Pakistan.
Hundreds of Hazara families have arrived in Quetta since the Taliban takeover in Kabul, most of them via human smugglers, according to an immigrant.
The explosion occurred in front of the office of the police chief in Quetta, which is capital of mineral-rich southern Balochistan.