daggerheart/templates/ui/combat/combatTrackerFooter.hbs

<nav class="combat-controls" data-tooltip-direction="UP">
    {{~#if hasCombat~}}
        {{#if user.isGM}}
            {{#if combat.round}}
                <button type="button" class="combat-control combat-control-lg" data-action="endCombat">
                    <i class="fa-solid fa-xmark" inert></i>
                    <span>{{ localize "COMBAT.End" }}</span>
                </button>
            {{else}}
                <button type="button" class="combat-control combat-control-lg" data-action="startCombat">
                    <i class="fa-solid fa-swords" inert></i>
                    <span>{{ localize "COMBAT.Begin" }}</span>
                </button>
            {{/if}}
        {{/if}}
    {{/if}}
</nav>