Top players’ demand and growth analysis of the on-demand scheduling software market in 2020-MDsyncNET, Derdack, Shift Admin, Ambs call center, PetalMD, ServiceNow, call scheduler, 1Call, OpenTempo, PagerDuty, Everbridge, Central Logic, Lightning Solutions, Kronos, Amtelco, QliqSOFT, SimplyCast, Spok November 5, 2020