FTD-style: run a firewall from its own device manager
A small site has one firewall and no FMC. An FTD-style firewall can manage itself: select FTD1 and press Open Device Manager. You build the same zones, policies and NAT as on a manager, and you still deploy. A firewall has one manager at a time: registering with an FMC ends this, as on the real product. MGR1 is here unused, so you can see that nothing needs it.
The simulator ticks each one as soon as the network meets it.
Give FTD1 the management address 10.0.0.2/24, and choose the local manager (configure manager local).
Interfaces and Zones: zones INSIDE and OUTSIDE, inside on Gi0/0 (192.168.1.1/24), outside on Gi0/1 (203.0.113.1/24). Routes: a default route on outside to 203.0.113.2.
Objects: LAN (192.168.1.0/24). Policies: access control policy ACP1, default block, allowing icmp from INSIDE to OUTSIDE, and NAT policy NAT1 with a PAT rule for LAN. Assign both on the Deploy screen.